<?php

function randStr($len)
{ 
    $chars='ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz'; // characters to build the password from 
    $string=''; 
    for(;$len>=1;$len--) 
    {
        $position=rand()%strlen($chars);
        $string.=substr($chars,$position,1); 
    }
    return $string; 
}
?>
